CN105439681A - Complex environmental-friendly fertilizer synergist and preparation method and application thereof - Google Patents
Complex environmental-friendly fertilizer synergist and preparation method and application thereof Download PDFInfo
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Abstract
The present invention discloses a fertilizer synergist and a preparation method thereof. The fertilizer synergist is prepared by the method comprising the following steps: (1) using gamma-ray for radiation of attapulgite placed in a snake leather bag, and treating the irradiated attapulgite with microwave; (2) mixing a silane coupling agent, the treated attapulgite and water for reaction to obtain silane-coupling-agent modified attapulgite; (3) mixing humic acid and the silane-coupling-agent modified attapulgite obtained by the step (2) for reaction to obtain a humic acid-attapulgite complex; and evenly mixing the humic acid-attapulgite complex and sodium carboxymethyl cellulose and sodium polyacrylate to obtain the fertilizer synergist. The fertilizer synergist allows the slow-release of fertilizer nutrients, but also can control nutrient loss. The fertilizer synergist can effectively improve the utilization rate of the fertilizer nutrients, reduces environmental pollution and promotes agricultural production increase.
Description
Technical field
The invention belongs to fertilizer synergistic agent preparation field, be specifically related to a kind of new and effective fertilizer synergistic agent and preparation method thereof and application.
Background technology
China is chemical fertilizers production and consumption big country.At present, the chemical fertilizer utilization ratio of China is very low, and nitrogen, phosphorus, potash fertilizer are respectively 25% to 30%, 10% to 25%, 35% to 50%.Current China per hectare fertilizer application amount reaches 240 kilograms, and unit surface rate of fertilizer application is 1.6 times of world's mean vol.China's chemical fertilizer utilization ratio is significantly less than developed country's level, and the service efficiency of chemical fertilizer is downward trend.The whole nation causes nitrogen discharge to reach 1,650 ten thousand tons because of fertilising every year, financial loss nearly hundred billion yuan, importantly brings and pollutes from the aerial serious environmental perspective to underground.The direct pollution that the ammonia, greenhouse gases etc. that discharge when being mainly manifested in and using chemical fertilizer, chemical fertilizers production to the pollution of air or store and transport cause.Mainly under the leaching of chemical fertilizer at water, migration occurred to the pollution of soil thus flows into rivers, lake or enter underground water, forming the main non point source of pollution of body eutrophication.To agricultural-food, chemical fertilizer is the most alarming is the accumulation problem of nitrate.The plant on chemical fertilizer soil is being used in growth, can by the nitrate in Root Absorption soil.If excessively apply fertilizer, can cause a large amount of Nitrate Accumulation in leaf, stem and root, endanger the mankind and livestock that take food.For soil, chemical fertilizer is to the pollution of soil, and heavy dressing easily causes soil compaction on the one hand; Heavy dressing may cause minimizing and the elimination of sensitive biological kind in soil on the other hand, destroys agricultural ecological balance, affects species diversity.
Slowly-releasing, controlled release and environmental friendliness are the general trends of Fertilizer development, and developing and applying full nutrition release and release control fertilizer is one of ultimate aim of fertilizer science.Since nineteen forty-two, urea-formaldehyde fertilizer obtained patent, slow release fertilizer has rapid progress, develops into again Controlled Release Fertilizer and some practical application in agriculture production in recent years.Particularly after the seventies, carried out large quantity research abroad, the existing Slow/Controlled Release Fertilizers commercially sold with commerical prod reaches tens of kinds.The U.S., Japan and every Western Europe country, be just devoted to applicating modern times technology development Slow or controlled release fertilizer.From late 1960s, China starts the research and development of sustained-controll-release fertiliser, and achieves phasic results, releases novel sustained-controll-release fertiliser successively, substantially can be divided into Envelope type and urine enzyme (or nitrated) suppressive principle.Urase (or nitrated) suppressive has the advantages such as technique is simple, cost is low, environmental protection relative to coated control release fertilizer, only needs add the hydrolysis rate that a small amount of urease inhibitor or nitrification inhibitor or the two title complex just can suppress urea in nitrogenous fertilizer, reduce the volatilization of ammonium nitrogen and nitrated, thus play slow releasing function.But urase (or nitrated) inhibitor conventional mostly at present is chemical products, there is the problems such as cost is high, the feature of environmental protection is low.
Regardless of which kind of fertilizer, finally all to be decomposed into nutritive salt ion and just can be absorbed by plants.Because the space scale of chemical fertilizer nutritive salt ion and water molecules are in same magnitude, are easily shifted to environment by approach such as seepage, runoff and volatilizations, not only reduce its utilization ratio, and cause environmental pollution.For Slow/Controlled Release Fertilizers, still there is the problem of loss in those releases (or decomposition) nutrient out.And urase-nitrification inhibitor moves in surrounding medium with chemical fertilizer nutrient is the same also easy, affects its effect.In the recent period, Hefei material science research institute of the Chinese Academy of Sciences develops a kind of sustained-release fertilizer material (ZL200710020264.3), its principle is different from coating and urine enzyme level, but utilize the micro-nano network structure that natural nano clay material self assembles is formed, chemical fertilizer nutrient is fixed, controls the loss of nutrient.At present, the composite environment-friendly chemical fertilizer technology of slowly-releasing and control mistake function is not also had concurrently.
Summary of the invention
The object of this invention is to provide a kind of slowly-releasing-control and lose synergistic agent and preparation method thereof.
Fertilizer synergistic agent provided by the invention can delay the release of chemical fertilizer nutrient, can control again the loss of chemical fertilizer nutrient, and slowly-releasing and control lost contact use, the degree of depth can improve nutrientuse efficiency, promote crop high yield, preserve the ecological environment.Its cardinal principle is: using attapulgite-humic acid-Xylo-Mucine-sodium polyacrylate mixture as composite environment-friendly fertilizer synergistic agent, add in common fertilizer and prepare the potent chemical fertilizer of composite environment-friendly.In soil, the attapulgite of grafting humic acid can issue raw elimination of colloid stability in the effect of Xylo-Mucine and sodium polyacrylate, forms three-D micro-nano network structure, thus is fixed in three-dimensional net structure by fertilizer nutrient.For urea, utilize the urase in humic acid suppression soil and nitrification, make urea slowly change ammonium nitrogen into, and then slowly change nitric nitrogen into, reach the object making nutrient slow releasing.The nitric nitrogen generated can be fixed on again in attapulgite micro-nano network, is equivalent to the space scale being exaggerated nutrient, thus reduces its mobility in soil filtering layer, reaches the object controlling to run off.Therefore, this technology possesses slowly-releasing and control mistake two kinds of functions simultaneously, can effectively strengthen chemical fertilizer effect, extend the expiration date, can not only improve chemical fertilizer utilization ratio, and effectively can alleviate environmental pollution.
The preparation method of composite environment-friendly fertilizer synergistic agent provided by the present invention, comprises the steps:
(1) utilize radiated by gamma-ray attapulgite, then by the attapulgite microwave treatment after irradiation, attapulgite rod crystalline substance is fully scatter, for subsequent use;
(2) react after the attapulgite after process in silane coupling agent, step (1) and water mixing, reaction terminates rear centrifugal, collecting precipitation, namely obtains the attapulgite modified through silane coupling agent;
(3) react after the attapulgite through silane coupling agent modification humic acid, step (2) obtained and water mixing, reaction terminates rear centrifugal, and collecting precipitation is also dried to constant weight, obtains humic acid-attapulgite clay compounded thing;
(4) humic acid-attapulgite clay compounded thing that step (3) obtains is mixed with Xylo-Mucine and sodium polyacrylate, i.e. obtained composite environment-friendly fertilizer synergistic agent.
Above-mentioned preparation method, in step (1), the energy region of described gamma ray is 2 ~ 5MeV, and irradiation dose is 10 ~ 50kGy, and irradiation time is 5 ~ 20 minutes.Described gamma-radiation specifically can be
60co gamma-radiation.
When irradiation, described attapulgite can be placed in various container, the selection of container with not obvious obstruction gamma ray penetrativity for standard, as on-metallic articles such as snakeskin bag, plastics bag, cartons.
During described irradiation, the placement thickness of attapulgite is 5 ~ 10cm, and quality is 5 ~ 10kg.
The power of described microwave treatment is 1 ~ 2kW, and the time is 20 ~ 40 minutes.
Above-mentioned preparation method, in step (2), described silane coupling agent selects following at least one: APTES, methoxy silane, isobutyl-triethoxysilicane; Be preferably APTES.
The proportioning of the attapulgite after processing in described silane coupling agent and step (1) is (1 ~ 2ml): (3 ~ 5g).
Concentration in the system of the attapulgite after the attapulgite in described step (1) after process processes in silane coupling agent, step (1) and water composition is 8 ~ 16g/L.
Described in step (2), the temperature of reaction of reaction is 40 ~ 60 DEG C, and the reaction times is 1 ~ 3 hour.
Described reaction is carried out under whipped state, and the rotating speed of described stirring can be 100 ~ 500rpm.
Described centrifugal rotating speed is 4000 ~ 10000rpm, and the time is 5 ~ 10 minutes.
Above-mentioned preparation method, in step (3), described humic acid can add with the form of weathered coal, and in wherein said weathered coal, the massfraction of humic acid is 40 ~ 70%.
The mass ratio of the attapulgite modified through silane coupling agent that described humic acid and step (2) obtain is (1-3): (5-10).
Described humic acid described humic acid, step (2) obtain through silane coupling agent modify attapulgite and water composition system in concentration be 0.8 ~ 2.8g/L, be preferably 1.6 ~ 2.8g/L.
Described in step (3), the temperature of reaction of reaction is 30 ~ 60 DEG C, and the reaction times is 10 ~ 30 minutes.
Described reaction is carried out under whipped state, and the rotating speed of described stirring can be 100 ~ 500rpm.
Described centrifugal rotating speed is 4000 ~ 10000rpm, and the time is 5 ~ 10 minutes.
The temperature of described drying is 50 ~ 80 DEG C.
Described step (3) also comprises the step humic acid obtained-attapulgite clay compounded thing being ground into 200 ~ 500 order powder.
Above-mentioned preparation method, in step (4), the mass ratio of described humic acid-attapulgite clay compounded thing, Xylo-Mucine, sodium polyacrylate is (7 ~ 9): (1 ~ 2): (1 ~ 2).
The particle diameter of described Xylo-Mucine and sodium polyacrylate is 200 ~ 500 orders.
The composite environment-friendly fertilizer synergistic agent that aforesaid method prepares also belongs to protection scope of the present invention.
The present invention is a kind of potent chemical fertilizer of composite environment-friendly containing described synergistic agent of protection.
The potent chemical fertilizer of described composite environment-friendly is made up of composite environment-friendly fertilizer synergistic agent provided by the invention and common chemical fertilizer (chemical fertilizer of any kind namely adopted at present), and wherein the mass ratio of composite environment-friendly fertilizer synergistic agent and common chemical fertilizer is 0.05/0.95 ~ 0.1/0.9.
Common chemical fertilizer of the present invention be at least selected from following any one: urea, ammonium fertilizer (as: bicarbonate of ammonia and ammonium sulfate etc.), phosphate fertilizer (calcium superphosphate, double superhosphate etc.), potash fertilizer (as: Repone K, potassium sulfate etc.), N P and K compound/Chemical Mixed Fertilizer (being formed by nitrogenous fertilizer, phosphate fertilizer and potash fertilizer compound or compound).
The method of the described potent chemical fertilizer of composite environment-friendly containing described synergistic agent of preparation; comprise the steps: that after mixing, granulation obtains by composite environment-friendly fertilizer synergistic agent and common chemical fertilizer 0.05/0.95 ~ 0.1/0.9 in mass ratio; wherein, the particle size range of described granulation is 1 ~ 5mm.
The method effectively can reduce n-p-k element migration and run off, and slows down chemical fertilizer ammonification and digestion, controls nutrient release rate, reaches slowly-releasing and the effect of control lost contact, improves the utilization ratio of chemical fertilizer, reduce chemical fertilizer to the pollution of environment, promote crop yield.
Embodiment
Experimental technique described in following embodiment, if no special instructions, is ordinary method; Described reagent and material, if no special instructions, all can obtain from commercial channels.
Below by specific embodiment, method of the present invention is described, but the present invention is not limited thereto.
Embodiment one
(1) gamma ray (2MeV is utilized, 10kGy) carrying out irradiation 5 minutes to attapulgite (5kg) (is contained in snakeskin bag, gauge control is at 5cm), then utilize microwave (1kW) to process 20 minutes (being contained in snakeskin bag), make attapulgite rod crystalline substance fully scatter for subsequent use;
(2) mixed according to 1ml:3g ratio by the attapulgite obtained in APTES and (1), then adding water is configured to suspension liquid, makes attapulgite concentration be 8g/L.Then, under 40 degrees Celsius, stir (100rpm) 3 hours, centrifugal (4000rpm) 5 minutes, abandoning supernatant, thus APTES is modified at the brilliant surface of attapulgite rod.Then adding tap water makes attapulgite concentration at 8g/L.
(3) (it is provided by weathered coal to add humic acid in the suspension liquid obtained in (2), wherein content of humic acid is 40%) make its concentration be 1.6g/L, stir 10 minutes at 30 degrees Celsius, humic acid is received on APTES, and then centrifugal (4000rpm) 5 minutes, and be dried to constant weight at 50 degrees Celsius, be ground into 200 order powder, obtain humic acid-attapulgite clay compounded thing.
(4) humic acid-attapulgite clay compounded thing obtained in 7 parts of (weight) (3) is mixed with 1 part of (weight) Xylo-Mucine (200 order) and 1 part of (weight) sodium polyacrylate (200 order), i.e. obtained composite environment-friendly fertilizer synergistic agent.
(5) add this fertilizer synergistic agent in common urea (wherein, in fertilizer synergistic agent, the quality of weathered coal is only in wherein contained humic acid quality, lower same) according to 10% massfraction, namely granulation obtains the potent urea of environmental protection.Compared with common urea, measure in time gathering in the crops, this urea is (blue or green potato 168 in potato produces, fertilizer amount is 50kg/ mu, make base manure), rate of release 22% ((the potent urea burst size of common urea burst size-environmental protection)/common urea burst size × 100% can be delayed, lower same), reduce loss 20% ((the potent flow of urea vector of common urea number of dropouts-environmental protection)/common urea number of dropouts × 100%, lower same), volume increase 24% (potato yield × 100% after (potato yield after using the potent urea of environmental protection-use common urea after potato yield)/use common urea, lower same).
Embodiment two
(1) gamma ray (5MeV is utilized, 50kGy) carrying out irradiation 20 minutes to attapulgite (10kg) (is contained in snakeskin bag, gauge control is at 10cm), then utilize microwave (2kW) to process 40 minutes (being contained in snakeskin bag), make attapulgite rod crystalline substance fully scatter for subsequent use;
(2) mixed according to 2ml:5g ratio by the attapulgite obtained in APTES and (1), then adding water is configured to suspension liquid, makes attapulgite concentration at 16g/L.Then, at 60 c, stir (500rpm) 1 hour, centrifugal (10000rpm) 10 minutes, abandoning supernatant, thus APTES is modified at the brilliant surface of attapulgite rod.Then adding tap water makes attapulgite concentration at 16g/L.
(3) (it is provided by weathered coal to add humic acid in the suspension liquid obtained in (2), wherein content of humic acid is 70%) make its concentration be 2.8g/L, stir 30 minutes at 60 degrees Celsius, humic acid is received on APTES, and then centrifugal (10000rpm) 10 minutes, and be dried to constant weight at 80 degrees Celsius, be ground into 500 order powder, obtain humic acid-attapulgite clay compounded thing.
(4) humic acid-attapulgite clay compounded thing obtained in 9 parts of (weight) (3) is mixed with 2 parts of (weight) Xylo-Mucines (500 order) and 2 parts of (weight) sodium polyacrylates (500 order), i.e. obtained composite environment-friendly fertilizer synergistic agent.
(5) add in common urea by this fertilizer synergistic agent according to 5% massfraction, namely granulation obtains the potent urea of environmental protection.Compared with common urea, measure in time gathering in the crops, the potent urea of this environmental protection, in potato produces (blue or green potato 168, fertilizer amount is 50kg/ mu, makees base manure), can delay rate of release 20%, reduces loss 25%, volume increase 21%;
Compared with only adding the common urea of 5% attapulgite, measure in time gathering in the crops, the potent urea of this environmental protection is (blue or green potato 168 in potato produces, fertilizer amount is 50kg/ mu, make base manure) rate of release 15% can be delayed, reduce loss 21%, volume increase 17%;
Compared with only adding the common urea of 5% humic acid, measure in time gathering in the crops, the potent urea of this environmental protection is (blue or green potato 168 in potato produces, fertilizer amount is 50kg/ mu, make base manure) rate of release 17% can be delayed, reduce loss 23%, volume increase 19%.
With only add the common urea of 2.5% attapulgite with 2.5% humic acid and compare, measure in time gathering in the crops, the potent urea of this environmental protection is (blue or green potato 168 in potato produces, fertilizer amount is 50kg/ mu, make base manure) rate of release 15% can be delayed, reduce loss 21.8%, volume increase 16.3%.
Embodiment three
(1) gamma ray (2MeV is utilized, 10kGy) carrying out irradiation 5 minutes to attapulgite (5kg) (is contained in snakeskin bag, gauge control is at 5cm), then utilize microwave (1kW) to process 20 minutes (being contained in snakeskin bag), make attapulgite rod crystalline substance fully scatter for subsequent use;
(2) mixed according to 1ml:3g ratio by the attapulgite obtained in APTES and (1), then adding water is configured to suspension liquid, makes attapulgite concentration at 8g/L.Then, under 40 degrees Celsius, stir (100rpm) 3 hours, centrifugal (4000rpm) 8 minutes, abandoning supernatant, thus APTES is modified at the brilliant surface of attapulgite rod.Then adding tap water makes attapulgite concentration at 8g/L.
(3) (it is provided by weathered coal to add humic acid in the suspension liquid obtained in (2), wherein content of humic acid is 40%) make its concentration be 1.6g/L, stir 10 minutes at 30 degrees Celsius, humic acid is received on APTES, and then centrifugal (4000rpm) 8 minutes, and be dried to constant weight at 50 degrees Celsius, be ground into 200 order powder, obtain humic acid-attapulgite clay compounded thing.
(4) humic acid-attapulgite clay compounded thing obtained in 7 parts of (weight) (3) is mixed with 1 part of (weight) Xylo-Mucine (200 order) and 1 part of (weight) sodium polyacrylate (200 order), i.e. obtained composite environment-friendly fertilizer synergistic agent.
(5) this fertilizer synergistic agent is added to Common compound fertilizer (N-P according to 10% massfraction
2o
5-K
2o:20-10-8), in, namely granulation obtains the potent composite fertilizer of environmental protection.Compared with Common compound fertilizer (waiting nutrient), measure in time gathering in the crops, the potent composite fertilizer of this environmental protection is (blue or green potato 168 in potato produces, fertilizer amount is 50kg/ mu, make base manure) rate of release 26% can be delayed, reduce loss 23%, volume increase 26%.
Embodiment four
(1) gamma ray (5MeV is utilized, 50kGy) carrying out irradiation 20 minutes to attapulgite (10kg) (is contained in snakeskin bag, gauge control is at 10cm), then utilize microwave (2kW) to process 40 minutes (being contained in snakeskin bag), make attapulgite rod crystalline substance fully scatter for subsequent use;
(2) mixed according to 2ml:5g ratio by the attapulgite obtained in APTES and (1), then adding water is configured to suspension liquid, makes attapulgite concentration at 16g/L.Then, at 60 c, stir (500rpm) 1 hour, centrifugal (10000rpm) 5 minutes, abandoning supernatant, thus APTES is modified at the brilliant surface of attapulgite rod.Then adding tap water makes attapulgite concentration at 16g/L.
(3) (it is provided by weathered coal to add humic acid in the suspension liquid obtained in (2), wherein content of humic acid is 70%) make its concentration be 2.8g/L, stir 30 minutes at 60 degrees Celsius, humic acid is received on APTES, and then centrifugal (10000rpm) 5 minutes, and be dried to constant weight at 80 degrees Celsius, be ground into 500 order powder, obtain humic acid-attapulgite clay compounded thing.
(4) humic acid-attapulgite clay compounded thing obtained in 9 parts of (weight) (3) is mixed with 2 parts of (weight) Xylo-Mucines (500 order) and 2 parts of (weight) sodium polyacrylates (500 order), i.e. obtained composite environment-friendly fertilizer synergistic agent.
(5) this fertilizer synergistic agent is added to Common compound fertilizer (N-P according to 5% massfraction
2o
5-K
2o:20-10-8), in, namely granulation obtains the potent composite fertilizer of environmental protection.Compared with Common compound fertilizer (waiting nutrient), measure in time gathering in the crops, the potent composite fertilizer of this environmental protection is (blue or green potato 168 in potato produces, fertilizer amount is 50kg/ mu, makees base manure), rate of release 24% can be delayed, reduce loss 21%, volume increase 17%.
Embodiment five
(1) gamma ray (3MeV is utilized, 30kGy) carrying out irradiation 10 minutes to attapulgite (8kg) (is contained in snakeskin bag, gauge control is at 7cm), then microwave (2kW) is utilized to process 30 minutes (being contained in snakeskin bag), attapulgite rod crystalline substance is fully scatter, for subsequent use;
(2) mixed according to 2ml:4g ratio by the attapulgite obtained in APTES and (1), then adding water is configured to suspension liquid, makes attapulgite concentration at 12g/L.Then, at 60 c, stir (500rpm) 1 hour, centrifugal (10000rpm) 10 minutes, abandoning supernatant, thus APTES is modified at the brilliant surface of attapulgite rod.Then adding tap water makes attapulgite concentration at 12g/L.
(3) (it is provided by weathered coal to add humic acid in the suspension liquid obtained in (2), wherein content of humic acid is 70%) make its concentration be 2.8g/L, stir 30 minutes at 60 degrees Celsius, humic acid is received on APTES, and then centrifugal (10000rpm) 10 minutes, and be dried to constant weight at 80 degrees Celsius, be ground into 500 order powder, obtain humic acid-attapulgite clay compounded thing.
(4) humic acid-attapulgite clay compounded thing obtained in 9 parts of (weight) (3) is mixed with 2 parts of (weight) Xylo-Mucines (500 order) and 2 parts of (weight) sodium polyacrylates (500 order), i.e. obtained composite environment-friendly fertilizer synergistic agent.
(5) this fertilizer synergistic agent is added to composite fertilizer (N-P according to 5% massfraction
2o
5-K
2o:12-12-8), in, namely granulation obtains the potent composite fertilizer of environmental protection.With Common compound fertilizer (N-P
2o
5-K
2o:12-12-8) compare, measure in time gathering in the crops, the potent composite fertilizer of this environmental protection is (blue or green potato 168 in potato produces, fertilizer amount is 50kg/ mu, makees base manure), rate of release 17.2% can be delayed, reduce loss 23.1%, volume increase 16.9%.
Claims (10)
1. a preparation method for fertilizer synergistic agent, comprises the steps:
(1) utilize radiated by gamma-ray attapulgite, then by the attapulgite microwave treatment after irradiation, attapulgite rod crystalline substance is fully scatter, for subsequent use;
(2) react after the attapulgite after process in silane coupling agent, step (1) and water mixing, reaction terminates rear centrifugal, collecting precipitation, namely obtains the attapulgite modified through silane coupling agent;
(3) react after the attapulgite through silane coupling agent modification humic acid, step (2) obtained and water mixing, reaction terminates rear centrifugal, and collecting precipitation is also dried to constant weight, obtains humic acid-attapulgite clay compounded thing;
(4) humic acid-attapulgite clay compounded thing that step (3) obtains is mixed with Xylo-Mucine and sodium polyacrylate, i.e. obtained described fertilizer synergistic agent.
2. method according to claim 1, is characterized in that: in step (1), and the energy region of described gamma ray is 2 ~ 5MeV, and radiation dose is 10 ~ 50kGy, and irradiation time is 5 ~ 20 minutes;
During described irradiation, the placement thickness of attapulgite is 5 ~ 10cm, and quality is 5 ~ 10kg;
The power of described microwave treatment is 1 ~ 2kW, and the time is 20 ~ 40 minutes.
3. method according to claim 1 and 2, is characterized in that: in step (2), described silane coupling agent selects following at least one: APTES, methoxy silane, isobutyl-triethoxysilicane; Preferred APTES;
The proportioning of described silane coupling agent and attapulgite is (1 ~ 2ml): (3 ~ 5g);
Concentration in the system of the attapulgite after the attapulgite in described step (1) after process processes in silane coupling agent, step (1) and water composition is 8 ~ 16g/L;
The temperature of reaction of described reaction is 40 ~ 60 DEG C, and the reaction times is 1 ~ 3 hour;
Described reaction is carried out under whipped state, and the rotating speed of described stirring is 100 ~ 500rpm;
Described centrifugal rotating speed is 4000 ~ 10000rpm, and the time is 5 ~ 10 minutes.
4. the method according to any one of claim 1-3, is characterized in that: in step (3), described humic acid adds with the form of weathered coal, and in wherein said weathered coal, the massfraction of humic acid is 40 ~ 70%;
The mass ratio of the attapulgite modified through silane coupling agent that described humic acid and step (2) obtain is (1-3): (5-10);
Described humic acid described humic acid, step (2) obtain through silane coupling agent modify attapulgite and water composition system in concentration be 0.8 ~ 2.8g/L;
The temperature of reaction of described reaction is 30 ~ 60 DEG C, and the reaction times is 10 ~ 30 minutes;
Described reaction is carried out under whipped state, and the rotating speed of described stirring is 100 ~ 500rpm;
Described centrifugal rotating speed is 4000 ~ 10000rpm, and the time is 5 ~ 10 minutes;
The temperature of described drying is 50 ~ 80 DEG C;
Described step (3) also comprises the step humic acid obtained-attapulgite clay compounded thing being ground into 200 ~ 500 order powder.
5. the method according to any one of claim 1-4, it is characterized in that: in step (4), the mass ratio of described humic acid-attapulgite clay compounded thing, Xylo-Mucine, sodium polyacrylate is (7 ~ 9): (1 ~ 2): (1 ~ 2);
The particle diameter of described Xylo-Mucine and sodium polyacrylate is 200 ~ 500 orders.
6. a fertilizer synergistic agent, the method according to any one of claim 1-5 prepares.
7. containing the potent chemical fertilizer of the synergistic agent described in claim 6.
8. potent chemical fertilizer according to claim 7, is characterized in that: be made up of fertilizer synergistic agent according to claim 6 and common chemical fertilizer, and wherein the mass ratio of fertilizer synergistic agent and common chemical fertilizer is 0.05/0.95 ~ 0.1/0.9.
9. the potent chemical fertilizer according to claim 7 or 8, is characterized in that: described common chemical fertilizer be at least selected from following any one: urea, ammonium fertilizer, phosphate fertilizer, potash fertilizer, nitrogen-phosphorus-potassium compound fertilizer or Chemical Mixed Fertilizer.
10. the preparation method of potent chemical fertilizer according to any one of claim 8-9, comprise the steps: that after mixing, granulation obtains by described fertilizer synergistic agent and common chemical fertilizer 0.05/0.95 ~ 0.1/0.9 in mass ratio, wherein, the particle size range of described granulation is 1 ~ 5mm.
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| CN113511941A (en) * | 2021-07-22 | 2021-10-19 | 东华大学 | Preparation method of straw-based reduced-application synergistic slow-release urea |
| CN116375526A (en) * | 2023-06-05 | 2023-07-04 | 安丘市天赐生物肥料有限公司 | Organic fertilizer prepared from fruit and vegetable waste and production method thereof |
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| CN106995329A (en) * | 2016-01-25 | 2017-08-01 | 中国科学院微生物研究所 | A kind of fertilizer synergist and use its organic fertilizer |
| CN107760309A (en) * | 2017-04-17 | 2018-03-06 | 中国科学院微生物研究所 | A kind of composite environment-friendly soil conditioner and preparation method thereof |
| CN107188677A (en) * | 2017-06-05 | 2017-09-22 | 合肥永泰新型建材有限公司 | A kind of composite environment-friendly type chemical fertilizer and preparation method thereof |
| CN111825492A (en) * | 2019-04-15 | 2020-10-27 | 中国科学院微生物研究所 | Water-soluble fertilizer synergistic additive and preparation method thereof |
| CN110999738A (en) * | 2019-11-27 | 2020-04-14 | 中国科学院合肥物质科学研究院 | Wheat planting method based on soil moisture measurement irrigation |
| CN111792957A (en) * | 2020-06-05 | 2020-10-20 | 北京峰润农业生物科技发展有限公司 | Composite synergist for water-soluble fertilizer and preparation method thereof |
| CN113185334A (en) * | 2021-05-19 | 2021-07-30 | 东华大学 | Method for preparing organic-inorganic compound fertilizer by quickly decomposing livestock and poultry manure |
| CN113354481A (en) * | 2021-07-07 | 2021-09-07 | 深圳市芭田生态工程股份有限公司 | Carbon-silicon porous cubic structure slow release fertilizer and preparation method thereof |
| CN113511941A (en) * | 2021-07-22 | 2021-10-19 | 东华大学 | Preparation method of straw-based reduced-application synergistic slow-release urea |
| CN116375526A (en) * | 2023-06-05 | 2023-07-04 | 安丘市天赐生物肥料有限公司 | Organic fertilizer prepared from fruit and vegetable waste and production method thereof |
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